CVE-2024-13731: 
WordPress vulnerability analysis and mitigation

The Alert Box Block WordPress plugin (versions up to 1.1.2) contains a Stored Cross-Site Scripting vulnerability identified as CVE-2024-13731. The vulnerability exists in the plugin's Alert Box block functionality due to insufficient input sanitization and output escaping on user-supplied attributes. The plugin was closed on March 20, 2025, pending a full security review (NVD, WordPress).

The vulnerability has been assigned a CVSS v3.1 base score of 6.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. The technical issue stems from improper neutralization of input during web page generation, classified as CWE-79. The vulnerability affects the Alert Box block feature which is used to display notices and alerts in the front end of WordPress websites (NVD).

When exploited, this vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses the compromised page, potentially leading to data theft, session hijacking, or other malicious actions (NVD).

The plugin has been temporarily closed from the WordPress repository as of March 20, 2025, pending a full security review. Users are advised to disable and remove the plugin until a patched version becomes available (WordPress).